Thanks everyone. This is a tough and frustrating situation to navigate.
What you can't do: Make someone go get vaccinated for whatever reason. And by the way, any intelligent and capable adult is going to get the vaccine, whether their spouse disagrees. Anyone who demurs to their spouse in this case is still, actually, making a decision. They're responsible for ultimately deciding not to get vaccinated, despite whatever the pressure may be, or who it is coming from, not to.
I think you are right. Both parents have earned my frustration here.